Improvement in machinery for making wire hed dles



UNITED STATES Finch..

PATENT EMIL T. HERTLE AND RICHARD THOMPSON, OF NEW YORK, N. Y.

IMPROVEMENT IN MACHINERY FOR MAKING WIRE HED"DLES.

Specification forming part of Letters Patent N0. 79,905, dated July 14, 1868.

accompanying drawings. forming part of this specification, in which drayvings- Figure l is :in elevation, partlyin section, of

a portion of a machine to which our improve- 'ment is applied.

cylinders being shown in horizontal section.

Fig. 2 is a plan view, the

Fig. 3 represents an improved heddle made with the aid of our invention. Fig. 4 represents a heddle made on a machine to whit-h our invention has not been applied.

AThis invention relates to an improvement of machinery for making wire heddles, and consists, in general terms, in causing the cylinders and jaws which grasp the heddle on each y side of the pinchers that form the warp-eye t0 move toward the pinchers while theoperation of twisting the wires and forming the eye is going on, so as to perform the operation of twisting without subjecting the wires to a longitudinal strain and make more perfect hoists in the heddle and a more perfect eye, and also to make the ends of the eye close and blunt, so that the warp-thread will not be liable to catch between the wires.

We have in this example shown our invention applied to an ordinary wire-heddle machine of the kind known as the Finkle machine; but we have shown only such parts of such machine as we have thought necessary to be represented in order to 'fully explain our invention.

The letters a a designate the usual revolving hollow cylinders, which are placed on either side ofthe pinchers G, between whose jaws the centralor warp eye of the wire heddleis formed. These cylinders a a' are supported in headstocks b b, in which they are free to turn, their revolutions at the times required being accomplished by means of geared wheels d d on their inner ends, which are putin rotation by means of intermediate gear wheels and shaft (not shown) that receive motion from the drivingshaft f. Each cylinder has, as usual, two pairs of jawsho c, one pair at each end. for the purpose of seizing and holding the wires that form the heddle during the operation of twisting the strands to forni the eye. Said jaws are arranged to work iu slots made in the cylinders lengthwise thereof, in which slots they are pivoted, :is is shown in the drawings. The jaws are opened and closed automatically by the movements on the cylinders of the sliding collars 1t n, said collars being made with inclinations and pins, which operate upon the tail ends of thejaws, as is clearly represented in the drawings.

We do not claimthe sliding collars n, their jaws o, nor their inclinations for operating the jaws, as these devices are in common use in Wire-heddle machines; but our invention consists in moving the cylinders a' ot toward each other while the twist is being given and the warp-eye formed.

The sliding collars n n are moved toand fro by a cam, g g, formed on a portion of the i periphery of a disk placed on the driving-shaft j', which cam is so formed as to move the collars the required distance on the cylinders and hold them stationary while the twist is being given to the heddle, the said cam being so timed as to release them and open the jaws as soon as the twist is completed. The forward end ot' cam g g imparts motion to the collars n n by means of sliding lbars h h and sliding rods i i', said rods i t" being provided with forks j j, which enter grooves made around the collars, and impart to the latter the motion ofthe rods in the ordinary manner.

Each ofthe bars h h is provided with antit'riction rollers at the ends, which come in contact with forward end of cani g g, and they are constantly forced toward the cam by springs l and m. Rod t" and bar h are dircctly connected to each other by a hinge-joint, as shown in the drawings, and the-rod i?, which acts in conjunction with cylinders a, which is the most distant from cam g, is connected to its bar h by a horizontal lever, lc, of the first order. paratory to the revolution of the cylinders a alf, we move said cylinders toward each other, for the more perfect twisting of the wires and the more perfect formation of the eye than has After the jaws o have been closed prehitherto been obtained, by the following construction and operation.

Thecam g g, which is in two parts, each independent of the'other, is made by pivoting the forward ends of the arc-shaped pieces g g,

to an arc-shaped rib, q, projecting from the periphery of the disk r, which rib q forms'the foundation ofthe cam or cams. The rear ends of the cams g g are slotted, as at p in Fig. 1, to

receive set-screws, which secure them to the lundation-rib q in any desired position of eccentricity to the center ot' the shat't f. The perlpheries of the arc-shaped pieces g g form cams, from which the movements o' the cylinders a a toward each other are obtain ed. Said .movements are communicated thereto through the action of said cams g g against the ends of the sliding arms h h after the forward end of said cams g g has operated to move the sliding` collar n, n to the extent ot' the distance allowed to them toward -the geared ends d d of said cylinders, said sliding collars being' then arrested by eenling up against circular shoulders s s', formed in cylinders next to the head-stocksz b b. These head-stocks b' b are movable in grooved beds, being held therein by screws u, which go through slots Vin the bottom of the bed, and they are moved toward each other by the action ot' the eccentric portions o of said extent of this approach or movement ot said cylinders and head-stocks toward each other is determined by the amount ot eccentricity given to the cam-pieces g g, and the duration of the movement is determined by the length ot' the arc occupied by them. When their' ends 2 have passed the bars lt h the springs l m restore the bars to their former position near the disk r and draw the rods t" i back in directionsrespecth'el y opposite to the directions indicated by the arrows marked on said rods,

whereby the sliding collars n n are also drawn back to their former positions on their respective cylinders, and the jaws c c are opened. At the same Lillie the cylinders a c and the movable head-stocks are moved back to their original positions by the operation of the spring l, which is arranged on rod fi between the movable head-stocks b b in such a manner that it becomes compressed by their movement toward each other; and when the collars a n cease to press against. the shoulders s s the tension of said spring Z operates to push the said headstocks back again to their former positions? taking with them the cylinders, with whose shoulders s s the head-stocks are always in contact.

The wires that form the heddle are drawn into the machine through the left-hand spindle or cylinder, a', at the receiving end of the machine, which spindle is so arranged in its headstocks as to be allowed some play endwse, be-

ing restored to its original posit-ion by the force ota spring, t.

Our invention enables us to prevent the formatiop of acute angles or crevices at the ends to the warp-eye ofthe heddles, as is now common in wire heddles. and to form smooth and rounded outlines at the ends of said eye, so that in the operations of forming sheds in weaving the warp will not catch in the ends of the eye, nor be frayed and torn therein, as is .now commonly the case when wire heddles ot' the ordinary construction are used.

It will be observed that by making the inner head-stocks, b b, and the cylinders or spindles .a a capable of motion toward each other, as

hereinabove set forth, they are both allowed to yield to the strain produced on them to draw them together by reason ot' the shortening o't' .the wires that compose the heddle in the process ot` twisting.

What we claim as new, and desire to secure by Letters Patent, is-

1. Arranging the head-stocks b D', which support the inner or adjacent ends ot' the cylinders t a', in the manner described, and for vthe purpose set forth.

2. The combination of the movable cylinders a a', the rods i t', bars It It', and cam-piecesgg, substantially as described, and for the purpose set forth.

This specitication signed by us this 20th day ot' March, 1868, in presence ot' two subscribing' witnesses.

EMIL T. HERTLE. RICHARD THOMPSON. Witnesses:

W. l-IAUFF, J. G. POLLER. 

